JPH05119769A - Automatic musical instrument playing device - Google Patents

Abstract

PURPOSE:To improve the direct access function and response in recording and reproduction by adding an inter-music code at the head of performance data, and specifying a storage area according to the address of the inter-music code and storing and reproducing the performance data. CONSTITUTION:Each keys of a keyboard 1 is provided with a 1st and a 2nd key switch and a solenoid 2 for key driving and the key switch group 3 is a block showing a gathering of key switches provided to the respective keys. A key information generating circuit 4 scans the outputs of the respective key switches of the key switch group 3 at all times to detect the ON/OFF states of the respective keys at all times. A CPU 6 controls respective device parts according to a program stored in a ROM 7. Then when performance data on plural pieces of music are stored, the inter-music code is recorded in the head address of the storage area and the addresses of the respective inter-music codes are stored successively in the storage order. The addresses of the inter- music codes are checked to access performance data on desired music.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic musical instrument playing apparatus, such as an automatic piano playing apparatus, which records a performance process of a performer in a storage means and automatically plays a musical instrument based on the recorded data.

[0002]

2. Description of the Related Art Various types of automatic performance devices have been developed for automatically playing a musical instrument based on stored performance data. For example, an automatic piano playing device is provided with a solenoid for driving a key and a pedal solenoid for driving a pedal corresponding to each key and pedal of the piano, and these solenoids are stored in a cassette tape or a floppy disk or the like. The piano is automatically driven based on the stored performance data to automatically play the piano.

[0003]

By the way, in this kind of automatic performance device, performance data of a music piece is divided into a melody section and a chord section and stored, and the start address of each is separately stored. There are things I tried to do. However, according to such a method, the start address of each of the separated melody part and chord part must be stored separately, so the area for storing the start address needs to be twice the number of songs (multiple times the number of songs). become. Further, during reproduction, it is necessary to reconstruct the performance data by synthesizing the melody part and the harmony part with an ajar (mixer) or the like. As described above, in the conventional technique, since the complicated processing of separating and synthesizing the performance data has to be performed, there is a problem in the direct access function and responsiveness at the time of recording / reproducing. There is also a problem that the storage capacity of the head address increases. The present invention has been made in view of the above circumstances, and provides an automatic musical instrument playing device that does not increase the storage capacity of the head address and can improve the direct access function and responsiveness during recording and reproduction. The purpose is to

[0004]

In order to solve the above-mentioned problems, the present invention records an inter-track code at the beginning address of the storage area of each performance data when recording the performance data of a plurality of music pieces. Continuously, storage means for continuously storing each performance data in the order of progression of music, head address storage means for continuously storing addresses of each of the inter-codes in storage order, and the head address when reproducing the performance data. A reproducing means for reproducing each performance data according to a reproducing instruction from the outside based on the address of the inter-track code stored in the storing means. In a second aspect of the invention, the control means, in the overlap recording of the performance data, records each performance data in accordance with an external recording instruction based on the address of the inter-track code stored in the head address storage means. It is characterized by recording.

[0005]

The control means can access the performance data of a desired music piece by checking the address of the inter-piece code in the head address storage means.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an automatic piano playing apparatus according to the present invention. The automatic playing apparatus shown in this figure has a function of recording data (performance data) relating to performance of a piano player and reproducing the recorded performance data. Both have the function of playing (the function of automatically playing the piano).

The main constituent elements will be described first. In FIG. 1, reference numeral 1 is a piano keyboard, and this keyboard 1
Each of the keys is provided with first and second key switches and solenoids 2, 2, ... For driving the keys. In this case, each of the first and second key switches is turned on at a different timing when the key is operated. That is, when the key is operated, the first key switch is turned on first, and then the second key switch is turned on. The key switch group 3 is a block showing a set of key switches provided for each key. The key information generation circuit 4 constantly detects the on / off state of each key by constantly scanning the output of each key switch of the key switch group 3. Then, when a new key is pressed, the key code KC and key-pressing strength data SD of the key is written in the internal register, and when the key is released, the key code written in the register. The KC and keystroke strength data SD are erased. The contents of the above register are output to the bus line 5. The keystroke strength data SD is obtained by measuring the time from when the first key switch of each key is turned on to when the second key switch is turned on. Further, a plurality of registers are provided in consideration of the case where a plurality of keys are simultaneously pressed.

A CPU (Central Processing Unit) 6 controls each part of the device based on a program stored in a ROM (Read Only Memory) 7, and is connected to each part of the device through a bus line 5. The operation unit 8 is a start switch that is pressed at the start of recording or playing of performance data,
Structure comprising a stop switch to be pressed at the end of recording or playback of performance data, a recording / playback switching switch for switching recording / playback of performance data, and an operation button such as a numeric keypad for designating a song number The outputs of the switches and operation buttons are coded and output to the bus line 5. The solenoid drive circuit 11 is C
Solenoid drive data S supplied from PU 6 via bus line 5 and output interface 12
Based on KD, a solenoid drive signal having a constant cycle and a pulse width corresponding to the same data SKD is created, and this solenoid drive signal is output to the solenoid 2 corresponding to the key address KA supplied from the CPU 6.

Next, the operation of the apparatus shown in FIG. 1 will be described. [1] Operation during recording of performance data In this case, the performer turns on the recording / playback changeover switch of the operation unit 8 to the recording side, presses the start switch, and thereafter performs a piano performance with the keyboard 1 to play the first song. Press the stop switch when the performance ends. To continue playing the second song, press the start switch again and press the stop switch at the end of the performance. The same applies to the third and subsequent songs. When the start switch is pressed, the CPU 6
Is a code between songs in which all bits are all “0” (see FIG. 5).
The code MC-1 in (a) is written in the head address of the area 15b of the RAM (random access memory) 15 shown in FIG. After that, the CPU 6 keeps a certain time (for example, 4 mse).
A register in the key information generation circuit 4 each time c) elapses
The data stored in the area 15a of the RAM 15 is written to the area 15a.
The change in the key depression state of the keyboard 1 (hereinafter, this change is referred to as an event) is detected by comparing the data written in the area 15a of the previous). For example, the key when the CPU6 performs an event detected at the time t ₁ ~t ₆ per 4msec shown in FIG. 3, the key F ₃ at time t _a (key of the third octave F sound) is on, at time t _b If F ₃ is a turned off, an event is detected Te time t ₂ and t ₅ odor, also, the event is not detected at time _{t 1, t 3, t 4} , t 6. If no event is detected, no processing is performed. If an event is detected, C
PU6 performs the following processing. That is, first, when the key-on is detected, as shown in FIG. 4A, the key code KC of the pressed key, the key-on code (“1”), the keystroke strength data SD of the key and the previous event are detected. A data block DB consisting of time data TD indicating the time from when the current event is detected to this time of event detection is written in the area 15b of the RAM 15. When the key-off is detected, as shown in FIG. 4B, the key code KC of the released key, the key-off code (“0”), and the current event detection from the time when the previous event is detected. The data block DB including the time data TD until the time is stored in the RAM 15
Area 15b. In this case, for example, the time data TD at the time of event detection at time t ₅ shown in FIG. 3 becomes data corresponding to the time T ₁ shown in FIG.

In this way, the CPU 6 performs an event check every 4 msec, and writes a data block DB containing the key code KC of the key whose state has changed each time an event is detected and time data into the area 15b of the RAM 15. Go (code DB-1, DE in FIG. 5A)
-2, ...). Then, when the area 15b becomes FuLL (full), the data in the area 15b is sequentially transferred to the floppy disk device 18 (storage means) via the disk controller 17, and the disk disk of the device 18 is transferred. Write. Further, the data related to the event that occurs during this writing is sequentially written in the area 15c of the RAM 15. When the area 15c is in the FuLL state, the data in the area 15c is written to the disk board and new data is written in the area 15b. Then, when the performer finishes the performance of the first music and presses the stop switch, the CPU 6 writes the inter-music code MC-2 shown in FIG. 5A in the area 15b (or 15c) of the RAM 15, and then the RAM 15 The data in the area 15b (or 15c) is transferred to the disk. Next, the CPU 6 writes the address of the inter-track code MC-1 (address of the disc board), which was written when the start switch was pressed, on another track of the disc board (see FIG. 5B). ..

Next, when the performer presses the start switch again in order to play the second piece of music, just as in the case described above, the inter-track code MC-3 (FIG. 5) is displayed at the head address of the area 15b of the RAM 15. (See (a)), and thereafter, the data block DB in the regions 15b and 15c of the RAM 15 is written in accordance with the performance of the second piece of music by the performer. Further, the written data block DB is sequentially transferred to the disc board. Then, when the performer finishes the performance of the second music and presses the stop switch, the inter-music code MC-4 shown in FIG. 5A is written in the area 15b (or 15c), and then the area 15b ( Alternatively, the data in 15c) is transferred to the disc. Next, the address of the inter-track code MC-3 (address of the disc board) is written to another track of the above-mentioned disc board following the address of the inter-track code MC-1 (see FIG. 5B). Similarly, when the performer continues to play the third song, the fourth song, ..., The data block DB relating to the performer's performance is sequentially written to the disc board, and the address of the inter-track code is given to the disc board. Of the index table I shown in FIG. 5B on the same track of the disc.
T is created.

[2] Operation during reproduction of performance data In this case, the operator first turns on the recording / reproduction changeover switch of the operation unit 8 to the reproduction side, and then specifies the song number by the operation button of the operation unit 8, Then press the start switch. When the start switch is pressed, the CPU 6 firstly, from the index table IT (FIG. 5 (b)) of the disk of the floppy disk device 18, the address corresponding to the music number designated by the operation button (inter-code address). Read. Next, the data recorded after the same address on the disk is sequentially stored in the area 15b of the RAM 15
And 15c. Here, for convenience of explanation, it is assumed that the operator designates the first music piece, and therefore the data blocks DB-1, DB-2, ... Shown in FIG. 5A are written in order from the head address of the area 15b. .. The data block DB and the data block DB-2 are assumed to be the data block DB at the time of key-off shown in FIG. Area 1
When the data transfer to 5b and 15c is completed, next,
CPU 6 is a data block DB at the start address of area 15b
-1 is read and written in the area 15a. After that, CPU6
Measures the time corresponding to the time data TD of the data block DB-1 written in the area 15a. Then, when the time corresponding to the time data TD elapses, the area 15
The next data block DB-2 is read from b, and the area 15
Write to a. After that, the CPU 6 uses the data block DB-2
The time corresponding to the time data TD of the key code KC of the data block DB-1 in the area 15a is measured.
And the keystroke strength data SD is processed. That is, the keystroke strength data SD of the data block DB-1 is converted according to the characteristic of the solenoid 2, and the solenoid drive data SKD obtained as a result is converted into a key address KA corresponding to the key.
It is also output to the output interface 12.
The output interface 12 stores the supplied solenoid drive data SKD and the key address KA, and also stores the stored data SKD and the key address K.
A is output to the solenoid drive circuit 11. This allows
The plunger of the solenoid 2 corresponding to the key code KC of the data block DB-1 is driven at a speed corresponding to the keystroke strength data SD, and the plunger of the solenoid 2 drives the key corresponding to the key code KC. Is pronounced. The keystroke strength data SD described above
From ROM to solenoid drive data SKD
It is performed based on the conversion table stored in advance.

Next, the data block D in the area 15a
When the time corresponding to the time data TD of B-2 has elapsed,
The CPU 6 reads the next data block DB-3 from the area 15b.
Is read and written in the area 15a. After that, the CPU 6 measures the time corresponding to the time data TD of the data block DB-3. Further, the CPU 6 outputs the output interface 1 based on the key-off code (“0”) and the key code KC of the data block DB-2 in the area 15a.
The solenoid drive data SKD stored in 2 is cleared. As a result, the solenoid drive signal applied to the solenoid 2 corresponding to the key code KC of the data block DB-2 is turned off, and the musical sound of the key is stopped.
After that, the above-described operation is repeated and the piano is automatically played. When the automatic performance of all the data in the area 15b is completed, the automatic performance is continuously performed based on the data in the area 15c, and the next data is transferred to the area 15b from the disk board of the floppy disk device 18. To be done. Thereafter, the data in the areas 15c and 15b are alternately automatically played, and new data is transferred from the disc disk each time the automatic performance by the data in the areas 15b and 15c is completed.

As described above, according to this embodiment, for example, during recording, by operating the REC operation key of the operation unit 8, the recording pointer is always the E of the last song.
It is not necessary to move to the ND part and search for a vacant place in each song, and after operating the REC operation key, the operation unit 8
By pressing the operation button for designating the song number, it is possible to obtain an effect such that over-recording can be performed from the beginning of any song. The inter-track chords MC-2, MC-4 ... Shown in FIG.
... is used to detect the end of the automatic performance of one song.

[0015]

As described above, according to the present invention, the inter-track code is added to the beginning of each performance data, and the storage area is designated and stored and reproduced based on the address of the inter-track code. It is possible to improve the direct access function and responsiveness at the time of recording / reproducing without increasing the head address storage capacity.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a storage area of a RAM 15 shown in FIG.

FIG. 3 is a timing chart for explaining event detection.

4 is a diagram showing a format of data written on a disk disk of the floppy disk device 18 in FIG.

FIG. 5: Data block DB written on the disc
-1, DB-2 ..., Inter-song chords MC-1, MC-2 ...
, And an index table IT created in the disc.

[Explanation of symbols] 6 ... Central processing unit (CPU), 7 ... Read-only memory (ROM), 15 ... Random access memory,
(RAM), 18 ... Storage means (floppy disk device).

Claims (2)

[Claims] 1. When recording performance data of a plurality of songs,
A storage means for recording inter-song chords at the head address of the storage area of each performance data, and subsequently storing each performance data continuously in the order of progression of music, and a storage means for successively storing the addresses of each inter-song code in the storage order. A head address storage means for storing the performance data; and a control means for reproducing the performance data in accordance with a reproduction instruction from the outside based on the address of the inter-track code stored in the head address storage means when the performance data is reproduced. An automatic musical instrument playing device characterized by: 2. When recording performance data of a plurality of songs,
A storage means for recording inter-song chords at the head address of the storage area of each performance data, and subsequently storing each performance data continuously in the order of progression of music, and a storage means for successively storing the addresses of each inter-song code in the storage order. A head address storing means for storing, and a control means for recording each performance data in accordance with a recording instruction from the outside based on the address of the inter-track code stored in the head address storing means when the performance data is overrecorded. An automatic musical instrument playing device comprising: